Clay-screen.



- No. 842,599. I PATENTED JAN. 29,1907.

9 J. B. WILLIAMSON.

CLAY SCREEN.

APPLICATION FILED APR.17,1906.

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acter which will UNITED STATES PATENT OFFICE.

I JOHN B. WILLIAMSON, OF MARIETTA, OHIO, ASSIGNOR OF ONE-HALF TO WILLIAMJ. WARK, OF MARIETTA, OHIO.

CLAY-SCREEN.

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application filed April 1'7, 1906. Serial No. 312.255.

To a, whom, it may concern:

Be it known that I, JOHN B. WrLLrAMsoN, a citizen of the United States,residing at Marietta, in the county of Washington and State of Ohio,have invented a new and useful Clay-Screen, of which the following is aspecification.

This invention relates to clay-screens; and its object is to provide adevice of this charquickly and thoroughly screen clay preparatory tomolding bricks therefrom, said screen being mounted in a peculiar mannerwhereby clogging of the out let thereof by tailings will be prevented.

A still further object is to provide means within the screen for keepingthe screenopenings clear, so that the action of the machine will befacilitated.

With the above and other objects in view the invention consists of aninverted frustoconical screen having an outlet at its lower end, saidscreen being secured adjacent said end to a rotatable shaft adapted tobe driven by any suitable mechanism and which hangs and is adapted tosupport the screen within a casing for receiving screened clay. Anoutlet-shaft surrounds the outlet-opening of the screen for the purposeof receiving tailings. A rotatable brush is disposed within the screenand parallel with the wall thereof and is provided with mechanismwhereby it can be revolved in a direction opposite to that of thescreen, so as to keep the screen-openings normally clear.

The invention also consists of certain other novel features ofconstruction and combinations of parts, which will be hereinafter morefully described, and pointed out in the claim.

In the accompanying drawings is shown the preferred form of theinvention.

In said drawings, Figure 1 is a vertical section through the machine.Fig. 2 is a plan view thereof, the drive mechanism being removed. Fig. 3is an elevation of the lower portion of the screen.

Referring to the figures by characters of reference, 1 1 are uprightssupporting a preferably rectangular frame 2, on which are arrangedstandards 3, which constitute supports for a cross-beam 4 with adrive-shaft 5 mounted thereon and having oppositelydisposed beveledgears 6 and7 rotatable therewith. Gear 6 meshes with and rotates a gear8, secured to a shaft 9, which is rotatabearing 11 is arranged upon theshaft near its lower end, and this bearing is connected to the frame 2by means of a plurality of inclined diverging arms 12, which extend fromthe bearing and are bolted or otherwise secured to the frame 2. Shaft 9is suspended within an inverted frusto-oonical casing 13, having anoutlet-spout 14 at its lower end.

An inverted frusto-conical screen 15 is arranged within the casing .13and is provided with a plurality of reinforcing-strips 16 along theouter face thereof, which are bolted or otherwise secured at their lowerends to a cylindrical skeleton frame 17, open at the sides and bottomand having cross-arms 18 therein, which are formed integral with asleeve 19, keyed or otherwise fastened to the lower end of shaft 9. Thescreen 15 is thus rigidly fastened to the shaft, and by reason of itspeculiar connection with shaft 9 it will be held at all times in properrelation to the shaft and will not sag.

which extends through one side of casing 13 and constitutes a dischargefor tailings.

The bearing 11 has a depending bracket 21, in which is journaled one endof a cylindrical brush 22, the other end of said brush being journaledin a hanger 23, connected to the frame 2. and meshes with a gear 25 on ashaft 26, j ournaled in bearings on frame 2 and standards 3 and providedat its upper end with a gear 27, which meshes with gear 7.

It is believed that the operation of the device will be thoroughlyunderstood in view of the foregoing description when read in connectionwith the accompanying drawings. Drive-shaft 5 is adapted to be rotatedin any suitable manner, and the gears thereon will rotate shafts 9 and26 in opposite directions. As sleeve 9 is secured to the shaft 9 thescreen 15 will be rotated therewith, the shaft 9 being supported andheld rigid by the two bearings 10 and 11. The screen can. be rotated inthis manner at any desired speed, and clay deposited therein will bethrown outwardly by centrifugal force and through the openings in thescreen, after which it will collect within the casing 13 and dischargethrough the spout 14.

The rotation of shaft 26 will cause the The cylindrical skeleton frame17 is surrounded by the inlet end of spout 20,.

A gear 24 rot-ates with brush 22 I brush 22 to revolve in its bearingsin a direction opposite to that of the screen 15, and any of the claywhich may oling to the screen Will be removed by this brush, so as toprevent the openings from becoming clogged. Any of the material whichWill not pass through the screen-openings NVlll gradually Work doWn tothe outlet of the screen and Will be discharged through the cylindricalskeleton frame 17 into spout 20. With a de vice of this character ascreen of considerable pro ortions can be formed, there is practica lyno danger of the failings becoming clogged in the outlet-op ening, andthe rotatable brush prevents the screen-openings from becoming stopped,and thereby greatly facilitates the screening operation.

Considerable importance is attached to the use of aibrush rotating in adirection opposite to that of the screen, because the results thusobtained are very desirable and the life of the brush is greatlyprolonged.

What is claimedis- In a machine of the character described thecombination with a frame, a stationary casing supported thereby andhaving an outlet, and a spout Within and extending from the casing; of arotatable shaft sus ended from the frame and extending into t e casing,a skeleton frame secured to and rotatable with the lower end of thesuspended shaft, a bearing for said shaft suspended from the frame anddisposed adjacent and above the skeleton frame, an invertedfrusto-conical screen having anoutlet, said skeleton frame being rigidlysecured Within the outlet, a

cylindrical brush journaled at one end Within the suspended bearing anddisposed Within and adapted to contact with the screen, mechanismforrotating the shaft and screen, and means for transmitting rotary motionfrom said mechanism to the cylindrical brush.

In testimony that I claim-the foregoing as my oWnl have hereto afiiXedmy signature in 4 5 the presence of two Witnesses.

. JOHN B. WVILLIAMSON, Witnesses:

J. O. BRENAN, HARRY SMITH.

